Conception takes place when _____________.

Question

BlackTom AI · Accepted Answer

To approach this question, I'll evaluate what constitutes conception in human reproduction from a typical biology standpoint.
Option 1: 'an ovum is fertilized by a sperm' This aligns with the common definition of conception as the moment the sperm fertilizes the egg, initiating a new genetic combination and the early steps of embryogenesis.
Option 2: 'a woman begins to produce milk' This describes lactation, which is unrelated to conception and occurs after pregnancy, not at its onset.
Option 3: 'a fertilized egg implants into the endometrium' Implantation happens after fertilization and is a critical post-fertilization step, but many sources distinguish conception as the fertilization event itself rather than implantation.
Option 4: 'none of the above' Since option 1 accurately reflects the standard conception event, this option is not correct.
Overall, the statement in option 1 most closely matches the accepted definition of conception, while the other options describe processes that occur later or are unrelated to the fertilization event.

Conception takes place when _____________.单项选择题

类似问题

Where does the female egg get fertilized?

Question at position 21 What is a zygote?An unfertilized female gamete produced in the testesA fertilized ovum containing 46 chromosomesA male gamete that matures in the uterusA hormone released to sustain pregnancy

The union of the ovum and sperm is termed:

What structure is formed after gametes unite?

The process by which a sperm cell combines with an egg cell is

______ prevents another sperm from binding to the sperm receptors on the oocyte's plasma membrane

Question at position 17 When a sperm nucleus fuses to oocyte nucleus creating a zygote, this is called amphimixis.TrueFalse

Conception takes place when _____________.

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